Grate.



No@ 868,338. PATENTED OCT. 15, 190.7.

E. GIRTANNER.

GRATB. APPLICATION FILED JULY 3!, 1905- a sums-enm- 1.

Inven ior PATENTED OCT. 15, 1907.

'P. GIRTANNEB, GRATE. APPLICATION: FILED JULY 31, 1.905.

3 SHEET8SHEET 2.

ll Ill-l Ill Ill! No. 868,338. PATENTED 001. 15, 1907.

- F. GIRTANNBR.

GRATE. APPLICATION FILED JULY 31, 1905.

a 8HEETS-SHEET a;

Wfne Lfug In Vent? Cy I @KAMM ,a NlTE P E CE-.4,

FREDERICK GIRTJZANNER, or QLEVELIANDJQITHO,ASSIGNQR, BY MESNE ASSIGYMENTSQTO.

tion, reference being had to the accompanying drawingsl ff" This invention relates to grates for steam boiler fnrnaces. a I

One of its objects is. to provide-efficient means for breaking the clinkers and for duinping'same and the otherunconsumed products.

Another object ism endow; a chain grate construction-with means whereby it may be forced beyond its l normal ca pacity should occasion require.

*The present invention-ischaracterized by simplicity in structure and durability of parts. ltmay be most conveniently summarized as consisting of the combidelin itelysetout infthe claims. 7 i

In the drawings, Figural is a side elevation of a grate having" my improvements and installed witha usual t-steam boiler. Fig 2 is' af'plan of the clinker breaking and dumping portion at the rearof the grate proper. Fig. 3 is a vertical section of such parts. '-Fig. 4' is a front view of the grate; the left hand half having the 20 nation of1parts.he1=einafter more fully described and chain and hopper plate ren'ioved." Figs. 5 and 6 are side elevations of one of the clinker breakingbars and one of the dumping bars respectively.

IrrFi'g'. 1, the grate is shown as inounted below a tubi ilar libiler A and above the ashpit B". At the rear 7 of the grate is theusnal bridge wall B? and over the grate nea i its forw a'rd end the crown wall BR The endless chain Got the grate is carried'on wheels (2 mounted on shafts U journaledin the front and rear ends of a frame D, which is supported by wheels cl resting on tracks (1', whereby the grate may front for cleaning. 4-0 The fuel is supplied to the gmteabov'e the hopper sheet E and in front of a gate l l. -This gate may be raised or lowered as desired by means of thesegmentf connected therewitlrby a rock shaft f and'arms f The segment ineshes with a worm P which is rotated be drawn. out at the to operate the gate. The an is shown as driven by means of a \i ori nivheel G oii'the forward shaft C it worm g meshes with this worm-wheel; Qu shaft of the worm is a ratchet wheel g driven by 1a pawl g which is oscillated by a suitable eccentric strap or 5 0 rod g i The features of construct-ions above described are of well-known form and are not specifically covered by the present invention. i

The present invention relates to the structure at the rear of the chain grate which allows the breaking of the GRATYE;

Specification of Letters Patent. Application filed July 31,1905. seri l N 271,95 0.

. aiming annnnnnlorln s'roKER ooM rfA o'oRroRA'rIoN'.

Patented Oct. 15, 1907.

clinkers, the removal of the refuse and the forcing of the grate that is, allows fuel to be passed over the grate morerapidly than it can beconsurned on the grate itself. This will nowbe described.

At the rear of the chain 0 is a' cross'beam H secured i in the side walls and being approximately an I-beam in form. At its upper edge this beamhas fingers'or projections h which extend lengthwise of the grate. Sew

cured to the beam H and to the bridge wall near their ends are longitudinal frames J. In these frames are recesses j-opening upwards. In the recesses rests a shaft K and onthis shaft rest the dumping bars L. These bars are'forined as shown in Fig. 6 having downwardly opening recesses l which take over the shaft K.

The dumping bars are extended laterally "at their rear ends as shownat 1, Fig. 2, so that consecutive bars substantially abut each other at this point while 'l'eav ing the recesses l in front thereof. Theseirear ends of the dumping bars'are connected together by a cross rod Zfwhich extends through 'alined eyes 1 in the dumping bars. By this means'the bars are held t'ogether in one substantially rigid structure and may be dumped as a unit; 1 v

Thedumping is accomplished by the operation of the lever N pivoted near the forward end of the grate frame and connected by a link P with an arm 1 depending from one of the dumping bars. When the forward end of the lever N is swung upward, theiarrn Z is drawn forward and downward, dumping the material into i the ash pit. I v

The forward ends ll of the dumping bars lie between thefingers h of the stationary beam H and receiv'e the I very hot coal as it is discharged from the chain. These ends are therefore the first to burn off, wherefore I prefer to'make them separate from the rest of the dumping bars} being bolted thereto as shown in' Fig. 6. The forward ends Z of the projections are enlarged to give .theni asv much durability as possible, and when they burnout, they are easily rem'ovc d'and replaced by substitutes. H

The clinker breakers consists of bars Q shown in Fig hand having downwardly opening'recesses g by which they hook over the same shaft, K which supports the dumping bars, These clinker breakers lie within the recesses 1? between consecutivev dumping bars, in front of th'e eiigaged rear. ends of the. dumping bars and befingers h of the'cross be'aIaH. The clinker breakers have depending portions q? With alined eyes q through which extends a rod g coupling the clinker breakers together as a unit. Theclinker breakers are operated by the lever S .which is connected by a link R with the rod g By this means the clinker breakers maybe rocked to break the clinkers as desired without dumping the material supported above the same. When the grate is dumped, the clinker breakers swing with the dumping bars, such bars engaging the rod q after some independent movement.

case, but it piles up in a burning mass at the rear of the grate over the (lumping bars, where the combustion is continued. This action is facilitated by reason of the fact that the dumping. bars and the clinker breakers may be operated alternately so that the material may be broken up and l'ed reanvardiy by theaction of these bars and when desired the bars may be simultaneously operated completely dumping the material.

To give more air to the burning mass on the dumping bar than would come between the dumping bars and clinker breakers, I provide at the rear of the same, an inclined cross plate T, which is in the form of a channel beam set in the bridge wall at its upper edge. This channel beam is perforated as shown at t and is thus adapted to deliver air coming from the ash pit through the passageway 1) directly into the burning material above the dumping bars, thus insuring the complete combustion thereof.

It will be noted that the dumping bars may be, by reason of the slotted openings, lil'ted out assembled, or, if desired, may be lifted out separately, provided the cross'rod Z uniting them'is removed. So also the clinker breakers maybe removed independently by the removal of the rods (1 and all of the mechanism may be lifted bodily outof the construction by reason of the slotted arrangement of the frames J.

1. The combination in a grate, of a cross beam having projecting fingers. a'cross shaft, dumping bars mounted on the shaft and extending between said fingers, means detachably connecting said bars together near their rear ends. and means for operating the bars.

2. The combination of a cross beam havingprojecting fingers at its upper edge, pivoted (lumping bars extending between said fingers, and pivoted clinker breaking bars opposite the ends of said fingers and between the dumping bars and swinging on the same axis as the dumping bars.

3. In a grate, ,the combination of a series of plvotally supported and individually removable dumping bars detachably connected together near their rear ends. and in dependently operated clinker breakers pivotally supported between the bins in front of said rear ends.

-i. In a grate. the combination of-a series of pivotally supported and individually removable dumping bars having laterally extended rear ends whereby recesses are provided bars and clinker breakers independently.

5, In a grate, the combination of a series of pivot-ally supported and individually removable dumping bars detachably connected together near their rear ends and to the rear of their pivots, pivotallyv supported clinker breakflls' between said bars, means connecting said clinker breakers together, and means for operating-the dumping bars and the clinker breakers. 'm

G. In a grate, the combination of a series of'pivotnilu supported and individually removable dumping bars having laterally extended-rear ends, whereby. recesses are provided between the bars in front of said rear ends and to the rear of their pivots, and pivotally supportedclinker breakers, occupying said recessesha cross bar connecting said .clinker breakers together, a cross bar detachably connecting said dumping bars together, and levers and links for independently operating thedurnping bars and the clinker breakers;

7. In a grate, the combination of means for supporting and feeding fuel. a cross beam at the rear of said means having projecting fingers, bars fitting into the spaces between the fingers and resting on the beam'and forming with the fingers when placed on the beam a substantially continuous smooth surface, and a pivotal support on which the bars are mounted and oscillated to and from the beam.

8. Ina grate, the combination of means for supporting and feeding fuel, a crossbeam at the rearrof said means having projecting fingers,- bars having removable cnds fitting into the spaces between the fingers and resting on the beam and forming with the fingers when placed on the beam a substantially continuous smooth surface; and a pivotal support on which the bars are mounted and oscillured to and from the beam. v

9. In a grate. the combination of a series of individually removable-bars, pivotal supports for said bars, moans independent of the'pivot and arranged-near the ends of the bars for detachably locking the bars together, a second series of bars pivotally mounted onthe same axis and arranged to swing independently of the first series of bars, and means for locking the second series together.

10. In a grate, the combination of a series of individually removable bars, pivotal supports for said-bars, means independent of the pivot for locking the bars together a second series of bars pivotaily mounted on the same axis and arranged to swing independently'of the first series of bars, and means'independcnt of the pivotal.

support for locking the second series of bars together.

11. In a grate, the combination of two sets of bar's..

slotted openings extending downwardly, such slots forming bearings for the bars. a pivotalsupport for said bars arranged in, the slots and means arranged away from the mounted dumping bars having lateral. ofifsets at their ends,

a rod passing through the part of the bar having the onsets for 'detachabiy locking the, bars together and a series of clinker breakers pivotally mounted between the bars.

14. In a grate. the combination of means for supporting and feeding the fuel. dumping bars arranged at the rear. thereof, clinke breakers alternating \ritlrsald dumping bars, th Soars and clinker breakers being pivotally mount;

ed and arranged to be independently oscillated to feed the fuel in a rearward direction from the feeding and sup porting means. both of said series of bars being mounted on a stationary pivot.

In testimony whereof. I hereunto afiix my signature in the presence of two witnesses.

. FREDERICK GiR'lX-LYNER.

Witnesses:

ALBr-urr H. Barns, N. L. Bimsmu. 

